<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div class="border">
    <div class="scound"></div>
  </div>
</body>
<style>
  .border{
    width: 200px;
    height: 200px;
    border-radius: 50%;
    border: 1px solid skyblue;
    position: relative;
  }
  .scound{
    height: 90px;
    width: 5px;
    background-color: brown;
    position: absolute;
    top: 10px;
    left:98px;
    animation: 60s rotate infinite steps(60) ; /*动画1秒旋转一次*/
    transform-origin: 3px 80px /* 秒针旋转中心*/
  }
  @keyframes rotate{
    form{
      transform: rotate(0);
    }to{
      transform: rotate(360deg);
    }
  }
</style>
</html>